New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Consultant	Pascale Cartrain	Germany	1 2 3 4 5
2	Sales Agent	Matti Karttunen	Austria	1 2 3 4 5
3	Marketing Assistant	Jaime Yorres	Germany	1 2 3 4 5
4	Marketing Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
5	Marketing Assistant	Howard Snyder	Brazil	1 2 3 4 5
6	Owner	Georg Pipps	Argentina	1 2 3 4 5
7	Marketing Assistant	Paul Henriot	England	1 2 3 4 5
8	Accountant	Jaime Yorres	Germany	1 2 3 4 5
9	Sales Consultant	Elizabeth Lincoln	Brazil	1 2 3 4 5
10	Sales Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
11	Sales Agent	Paul Henriot	Spain	1 2 3 4 5
12	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
13	Marketing Assistant	Paul Henriot	Spain	1 2 3 4 5
14	Accounting Manager	Jaime Yorres	Italy	1 2 3 4 5
15	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
16	Marketing Manager	Hanna Moos	Spain	1 2 3 4 5
17	Owner	Georg Pipps	Italy	1 2 3 4 5
18	Sales Representative	Hanna Moos	USA	1 2 3 4 5
19	Accounting Manager	Georg Pipps	Germany	1 2 3 4 5
20	Marketing Assistant	Pascale Cartrain	France	1 2 3 4 5
21	Sales Representative	Matti Karttunen	Brazil	1 2 3 4 5
22	Sales Manager	Matti Karttunen	Austria	1 2 3 4 5
23	Sales Consultant	Elizabeth Lincoln	Austria	1 2 3 4 5
24	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
25	Sales Associate	Howard Snyder	England	1 2 3 4 5
26	Sales Consultant	Georg Pipps	Spain	1 2 3 4 5
27	Marketing Assistant	Matti Karttunen	Argentina	1 2 3 4 5
28	Marketing Assistant	Patricio Simpson	Argentina	1 2 3 4 5
29	Sales Agent	Matti Karttunen	Germany	1 2 3 4 5
30	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
31	Accountant	Paul Henriot	Italy	1 2 3 4 5
32	Accounting Manager	Matti Karttunen	Spain	1 2 3 4 5
33	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
34	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
35	Owner	Patricio Simpson	Italy	1 2 3 4 5
36	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
37	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
38	Marketing Assistant	Elizabeth Lincoln	Brazil	1 2 3 4 5
39	Sales Manager	Jaime Yorres	USA	1 2 3 4 5
40	Sales Consultant	Matti Karttunen	Brazil	1 2 3 4 5
41	Marketing Manager	Jaime Yorres	USA	1 2 3 4 5
42	Accountant	Antonio Moreno	France	1 2 3 4 5
43	Accountant	Antonio Moreno	USA	1 2 3 4 5
44	Accountant	Jaime Yorres	Spain	1 2 3 4 5
45	Owner	Matti Karttunen	Italy	1 2 3 4 5
46	Accounting Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
47	Accounting Manager	Jaime Yorres	Brazil	1 2 3 4 5
48	Marketing Manager	Howard Snyder	USA	1 2 3 4 5
49	Owner	Paul Henriot	France	1 2 3 4 5
50	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
51	Sales Associate	Matti Karttunen	Germany	1 2 3 4 5
52	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
53	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
54	Accountant	Jaime Yorres	Italy	1 2 3 4 5
55	Accountant	Howard Snyder	Austria	1 2 3 4 5
56	Sales Manager	Jaime Yorres	USA	1 2 3 4 5
57	Sales Consultant	Hanna Moos	Spain	1 2 3 4 5
58	Sales Manager	Pascale Cartrain	Brazil	1 2 3 4 5
59	Accounting Manager	Patricio Simpson	Spain	1 2 3 4 5
60	Accountant	Matti Karttunen	Spain	1 2 3 4 5
61	Marketing Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
62	Accounting Manager	Patricio Simpson	France	1 2 3 4 5
63	Accountant	Howard Snyder	Brazil	1 2 3 4 5
64	Marketing Manager	Elizabeth Lincoln	Italy	1 2 3 4 5
65	Accounting Manager	Hanna Moos	England	1 2 3 4 5
66	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
67	Marketing Assistant	Georg Pipps	USA	1 2 3 4 5
68	Sales Representative	Antonio Moreno	Germany	1 2 3 4 5
69	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
70	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
71	Accountant	Antonio Moreno	Bulgaria	1 2 3 4 5
72	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
73	Accounting Manager	Patricio Simpson	England	1 2 3 4 5
74	Sales Consultant	Pascale Cartrain	USA	1 2 3 4 5
75	Accounting Manager	Georg Pipps	Italy	1 2 3 4 5
76	Sales Associate	Paul Henriot	USA	1 2 3 4 5
77	Sales Manager	Georg Pipps	France	1 2 3 4 5
78	Accounting Manager	Howard Snyder	Spain	1 2 3 4 5
79	Sales Representative	Paul Henriot	Italy	1 2 3 4 5
80	Sales Associate	Paul Henriot	Bulgaria	1 2 3 4 5
81	Marketing Assistant	Howard Snyder	Bulgaria	1 2 3 4 5
82	Sales Agent	Paul Henriot	Spain	1 2 3 4 5
83	Sales Representative	Jaime Yorres	France	1 2 3 4 5
84	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
85	Marketing Manager	Georg Pipps	England	1 2 3 4 5
86	Sales Associate	Jaime Yorres	Bulgaria	1 2 3 4 5
87	Marketing Manager	Elizabeth Lincoln	USA	1 2 3 4 5
88	Owner	Paul Henriot	Argentina	1 2 3 4 5
89	Accountant	Patricio Simpson	Argentina	1 2 3 4 5
90	Accountant	Jaime Yorres	Italy	1 2 3 4 5
91	Accounting Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
92	Sales Consultant	Pascale Cartrain	Spain	1 2 3 4 5
93	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
94	Accounting Manager	Jaime Yorres	Italy	1 2 3 4 5
95	Marketing Assistant	Howard Snyder	Brazil	1 2 3 4 5
96	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
97	Accounting Manager	Antonio Moreno	USA	1 2 3 4 5
98	Marketing Assistant	Hanna Moos	Bulgaria	1 2 3 4 5
99	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
100	Sales Manager	Matti Karttunen	Brazil	1 2 3 4 5


...191 192 193 194 195 196 197 198 199 200 ... Item 194001 to 195000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance